How much PSU Wattage do i need?

[Firewater21]

Im thinking of running two HD 7950s in my rig, how much PSU wattage do i need?

My other components:

Intel i7-4770 Haswell (not overclocked)
MSI Z87-GD65 Gaming
CoolerMaster Seidon 120m liquid cooler
8GB G.Skill RipJaws X
2TB Seagate Barracuda

Thanks!

 

[ko888]

For a system using two AMD reference design Radeon HD 7950 (non-Boost Edition) graphics cards in 2-way CrossFire mode AMD specifies a minimum of a 750 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 45 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

 

[CommentariesAnd More]

Check out my guide for help on wattage requirements and PSU selection. Check out PCPartPicker for exact info on wattage. Just go to system build , add your selected parts and check the estimated wattage. Get a PSU 100-300W above your needs depending on your requirements and budget.

 

[toyftw]

Im thinking of running two HD 7950s in my rig, how much PSU wattage do i need?

My other components:

Intel i7-4770 Haswell (not overclocked)
MSI Z87-GD65 Gaming
CoolerMaster Seidon 120m liquid cooler
8GB G.Skill RipJaws X
2TB Seagate Barracuda

Thanks!

Hi - Any quality 750w PSU will do the job & allow you to overclock, there also
some 650's that will suffice(have 4 pcie connectors & sufficient +12v amps)

Where are you located? and what's your budget for a PSU?